Furnace



N5 ModeL) E. G. CONDIT FURNACE.

N0. 397,697. Patented Feb. 12, 1889..

ASBEJrcs L'INM/c N. PETERS. Pholo-uthognp ur. Wdahingian, no

UNITED STATES PATENT Fries.

EZEKIEL O. CONDIT, OF KANSAS CITY, MISSOURI.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 397,697, dated February 12, 1889.

Application filed May 22, 1888- Serial No. 274,672. (N0 model.)

capacity can be adapted to the varying condij tions of the weather, as hereinafter more fully set forth.

shown in section on the line .rrcol' Fig. 2.

1 1 of Fig. 1.

The object of this invention is to produce a furnace for heating buildings that will enable the amount of surface heated to be varied as circumstances may require, and that can be drawn bodily out of the hot-air chamber when necessary for cleaning or repair.

To construct my improved furnace, I make an oblong body, A, which may be oval. in form, as represented in 2, this part being preferably of wrought-iron, with the top and bottom plates of cast-iron. It has at thcfront a fire-box, F, and ash-pit P, set below the body, as shown in Fig. 1. In rear of the grate, and on a line with its outer edge on each side, I locate an oblong air-pipe, h, which extend from the rear end of the grate to near the rear end of the bodyA,as shown in Fig. 2, thereby dividing the body into three chambers or passages in rear of the grate, these pipes h being open at top and bottom, so that the air can pass through them. Along each side, between these pipes 71,1 locate one or more rows of vertical air-tubes, d, and between the pipes h, I locate another but shorter row of air-tubes, '6, all as shown in Fig. 2. At the front the space be tween the two oblong pipes h is provided with a valve or damper, Z, by which said space or passage can be opened. or closed at will, and at the rear ends of these pipes 71, I arrange two other dampers, 7t and it, as shown in Fig. These dampers are each provided with journals on which they turn, their lower journals projecting through the bottom plate, and having arms 6 attached, as shown in Fig. 1 and in dotted lines in Fig. 2, to which rods 9 g and g are connected, so they can be operated from front, as shown. If preferred, the front valve can have its operating arm and rod located atthe top, as indicated in Fig. 1; butas the ash'box is considerably narrower than the body there is room for it to pass alongside of the fire-box at the bottom, it bein g immaterial whether the rods be located at top or bottom.

The smoke-pipe S, I connect to the furnace at or near its center, as shown in Fig. 1, and

I to enable it to be readily disconnected from Figure l. is a side elevation with a portion the furnace while held fast in. the brick-work above I make use of a hinged collar, 'm. (Shown Fig. 2 1s a horizontal sectional view on the line in section in the detached figure.) This collar, being provided with a hinged joint, '21., at

' one side, can be readily put around the end of the pipe an d the short collar 6, which projects from the top of the furnace, and then be drawn up tight by bolts passing through its flanges on the side opposite the j oint, as shown in Fig. 1 and in the detached figure. In order to make the joint gas and smoke tight, I wrap a sheet of asbestus packing around the collar and pipe before applying the collar, as shown in detached portion of Fig. 1.

As shown in Fig. 1, I mount the furnace on wheels (3, the rear portion being provided with legs I, on account of its greater height, these wheels being grooved, so as to run 011 rails I), laid in the bottom of the hot-air chamber, as shown. The furnace is to be inclosed in a brick chamber composed of walls at each side and at the rear end, but open at front, as shown in Fig. 2, it having a top, B',eo1nposed of brick-work supported on metal bars a in the usual manner, this top being built tight around the smoke-pipe S to prevent the escape of the hot air and hold the pipe securely in place.

To the front of the furnace is secured a cast iron plate, D, of the proper size to completely close the open end of the air-chamber, when .thefurnace is shoved therein to its position;

and in order to insure this plate fitting snugly to the wall the rails 17 are slightly inclined to the rear, so there will be a tendency of the it will be closed by mortar when the furnace is prepared for use in the fall.

The results of this construct-ion are as follows: By closing the dampers k and k at the rear and opening the front damper, Z, it will be seen that only a small portion of the furnace will be heated, as the products of combustion will pass direct from the grate into the space between the oblong pipes 71, and thence direct to the smoke-pipe S, thus adapting the furnace to very mild weather, when the minimum of heat required. When more heat is required, by closing the valve Z and either 7; or 7. the flame and smoke will pass along one side between the oblong pipe hand the wall of thefurnace-bodyon that si.de,thence through the open valve-space at the rear, and then forward between the oblong pipes h h to the smoke-pipe S, and of course heating the tubes (Z on the side along which it passes, and also the tubes 1 and one of the pipes h on one side its whole length, and both of them on their inner side part way. For extreme cold weather the valve will be closed, and both valyes 7; and 7.1 opened, in which case the smoke and flame or heat will divide at the front and pass along both sides, then unite at the rear and enter between the oblong pipes h h, thus heating all parts of the furnace, the body A, and the pipes (Z, 71, and 2'. By these means the heating capacity of the furnace can be varied to suit all conditions of weather by merely opening and closing the valves.

lVhen it is desired to get at the furnace for cleaning it or for repairs, it is only necessary to remove the collar m, so as to detach it from the smoke-pipe, and which can readilybe done through a man-hole in one of the side walls, as shown by dotted lines, Figs. 1 and 2, and which is closed by a hinged door set when the heat-chamber is built, and then draw the furnaee forward out of the chamber, where it can be got at. The removability of the fur- I n ace can be removed with but a few moments work and the brick-work left intact. The advantages of these improvements are too obvious to require further mention.

Having now fully described my invention, what I claim is 1. A furnace consisting of the body A, having the two oblong air-pipes 7r 7L arranged therein in rear of the fire-box, and the dampers Z and 76 7t, located as shown, for the purpose of directing the products of. combustion and thereby heating more or less of. the fur nace, as herein set forth.

2. The combination, in a lieatirig-furnace, of the body A, the oblong air-pipes h 72 with the two exterior rows of air-tubes, (Z, and the valves 70, 7t, and Z, all arranged substantially as shown and described.

3. The combination, in a furnace, of .the body A, having the oblong air-pipes h 71, the two rows of air-tubes (Z, and the central airtubes, '6, located therein as shown, with the valves 71;, 7i, and Z, all arranged to operate as set forth.

In witness whereof I hereunto set my hand in the presence of two witnesses.

EZEKIEL C. CONDIJ.

'Witnesses:

JNo. flnonr, JOHN I. HonLrncnn. 

